Signal detection system with dynamically adjustable detection th

Details Signal detection system with dynamically adjustable detection th Signal detection system with dynamically adjustable detection th

1991-01-24

1992-01-28

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

34030915, 340526, 340511, G08B 1300

Patent

active

050846965

ABSTRACT:
A signal detection system with dynamically adjustable detection threshold includes a signal detection comparator having a dynamically adjustable threshold which adjusts the detection sensitivity of the comparator from a quiescent value to a value which is dependent upon the value of an event trigger signal, thus anticipating the amplitude of a second, confirming event trigger signal. Additionally, an alarm window timer activated by an event signal which exceeds the quiescent signal detection comparator threshold, assures that an alarm activator will be enabled only after a second, confirming event trigger signal exceeds the adjusted detector threshold, and which occurs during the active period of the alarm window timer.

REFERENCES:
patent: 4521768 (1985-06-01), Haran et al.
patent: 4528553 (1985-07-01), Hastings et al.
patent: 4636774 (1987-01-01), Galvin et al.
patent: 4691196 (1987-09-01), Kern et al.
patent: 4831361 (1989-05-01), Kimura
patent: 4975684 (1990-12-01), Guttinger et al.

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